Are you getting disconnected from net when you get an incoming call or someone picks up the phone receiver ? Its a issue for BSNLdataone users,they get frustrated ,some of them stop using internet for the time.But it might not the issue from BSNLend,it may be from your end also. ADSL light on-off problem may be from your end.

So here I have shown one block diagram of your connection of phone.

Here you can see line coming from BSNLexchange is going to your main phone and then its going to your internet modem.In such connection wheneverthereis change in phone 1 condition the ADSL light will be gone.So your internet connection will be lost.You can see how serially data is fed to Phone 1 then Phone 1 to Dataone modem.

Solution to this problem is making your connection like below.

In above block diagram you can see phone line from BSNL exchange is going to internet modem first.Then in modem there is output port for phone line.From thereline is going to your main phone.So now whatever condition of Phone 1 changes ADSL signals are already has been filtered by your internet modem.So your internet connection will not disconnect.

If you want to use more than one phone make your connections according to below block diagram.

In this block diagram you can see after phone line is taken out from Internet modem there is parallel connection of all phones.So it won’t affect any phone or internet connection.

Originally, the telephone wire comes to my home, and then it goes into a splitter. the splitter gives two wires, out of which one goes to router and another goes to phone. where is the probability to connect phone after router? Don’t you use a splitter?

here use of splitter is understood…in diagram where I have shown phone line is going to modem that means its going to splitter then one wire to modem and another to phone.
Your solution is same. Main line–>splitter–>1 to modem,1 to phone.Make 2 parallel connection in the line coming out of splitter for phone..as shown in diagram..and connect phone1 and phone2

Some phone restricts application to use extra features i.e. GPRS, data write read. It’s part of security of phone. So you can set always allow application to use data connection if you can, else choose Yes Allow when it asks it.

Very informative, thanks. I have a parallel line in the hall while the phone line-splitter-modem + phone setup is there in an inner room where I work from home. Should I get a new splitter put up in the hall as well?

Bsnl wire(Black 2 wire) coming from post is attached to “box” which has Rj11 jack.From that i connect phone previously.But now when i change my plan to internet,bsnlman cut the wire between the box and long the wire to my computer room then using splitter ,connects modem,connects the other end having this box to phone…i have now problem of drops now…
In short:Previous method:bsnl wire < box < phone
Now:Bsnl wire<- splitter-to modem
– connects box then < phone
Also there are so many cuts between wire
My question is can i connect this splitter after this "box" and split phone and modem?to avoid these joining happens now?

Previous:bsnl black 2 wire to main box then mainbox using rj11[6p2c] connector to phone
Now: Bsnl black 2 wire to splitter(directly without help of main box) then splitter to modem(Using rj11[6p2c] connector here cuts happens and phone(this wire comes to main box then using rj11[6p2c] connector to phone) here also cut happens..
My question is can i connect this splitter after this “box” and split phone and modem?to avoid these joining happens now?